Lubricating valve



June 24, 1930. s. s. ROBERTS LUBRICATING VALVE Filed July 3, 1928 Patented June 24, I936 UNITED STATES John H. BULLEN, on oa zivroiv'r; PENNsYLvANrA 1 SAMUEL s. ROBERTS, on PITTSBURGH, PENNSYLVANIA, AssIeN-oRoF clan- ALF: 'ro

' LUBnIoArrNe vALvE .7 Application filed July 3, 19 28 serialli'o 290g097;

. jThis invention relates. to lubricating :valves intended to be used more inparticu- ,lar with lubricating greases.

The primary" object of this invention is p 5 to provide a lubricating valvehaving a reciprocable piston adapted for operation without the use of springs andin which the piston is reciprocatedintermittently by the fluid pressure of the lubricant. Another object is to provide a lubricating valve. in

which the amount of grease delivered at every stroke of the piston may be :regulated to suit the requirements of the" installation wherein used. A further object is the provision ofa lubricatingva'lve'which is very simple in construction, positive in operation; and V which can be manufactured at relatively low cost../Additional features .and advantages of this invention will appearlgfrom the; following description. considered in connection with the accompany- ..ing drawing. I.

In the drawing:v

Fig. 1 is a frontelevation of the lubr i- .catin'gvalve. Fig. 2 is'a top plan v iew of Fig.1, the

. i e gl ver and thevalve l'plug having "been omitted". r I

:Fig. 3 'isa sectional view'taken-on line 3'3,Fig. 1, some'portions beingshown in g grees from tl iepositionshoiivn-in Fig.5

y Fig. 'Tis afragmentary perspective .view showing the connections of the. valve F inlets and outletsto alubricating: system y lubricating valve builtl.-according to nathis invention comprises a main valve-body Fig. 3.

a cap ,2. a valvesplug 3 and a displaee ement piston or plunger 4. r

The valve-body l is bored through'tojreceive the close .fitting. rotatable valve-plug .3 which is held in place on .thevalve body by means. of a collar 5 and, an operating lever 6,1 bothsuitably secured to the valveplug. 'In the latter are drilled inspaced relation the two. diametral .valve ports 7 and 8- runningin the same direction; Valvev port 7 may communicate with the tworec tangularly disposed inlet ports 9 and. 9?, whereas the valve. port 8 may communicate 1O andlOF. The sets of ports .9 and' l O are connected to the piping of the lubricating system -by,.means of pipe bushings; 11 and .12 screwed into the valve-body:and preferably bored conically, as. plainly shown in The valve-body is suitablybored angles. to the valve-plug and. abovethe same to produce the grease cylinder l3 in, which the close fitting-floating piston it may be reciprocated. The latter, is. secured on the end lt of thepiston-rod 15, the upper end with the rectangularly disposed outletlports 16 of which is threaded and pass'es.,ithrough the bridge portion 17 of the yoke 18 mounted on the cap-2 havingacentral .19

hermetically fitted in the cylinder or com tainer 13. -L In order} not piston-rod and by,.the protruding. portion of the piston end 14. Thepiston; rodis guided in the cap 2,by-a-,close fittingfaperture which eliminates the use} of. .stuffing l .box- However; a stuifing box of any ordiary type could'be provided;.if-found de-' 'slrablez V 1 v The; inlet. Iport 9. communicates. with the lower endof-zthecylinder. 13.: throu h. ducts 21' and 22, the latter beingZr'ilrilledrom the to cover the various ducts leading; into the. cylinder, the'pistonA is -prevented .from I touching the ends .of, the cylil lderv by theflange20iprovided. on the outside and closed at its outer end by a re-v movable pipe-plug 23 to allow for the occasional cleaning of said duct. The inlet I Ch V the valve piag, be shot i-ntqgthe p tn astated periedi -1 map-eating leveriema'y be operated.by a connecting rod 32 which is preferablycon' nected to a system of levers automaticallyactuated, at suitable intervals, by a quick acting electro-magnet'," not shown. The amount of rotation imparted to the valveplug wouldbe', inJ-the-Ipresent' case, equal to 90 degrees in orderto 'bring-the valve ports 7 aiid 8 in 'connnu'nication' Withthe'ir respectivefanfgul arly disposed inl'et l outlet a grease storage tankKnot-shown) by means of the br'arfch'ed pip 'conneet'ion 33",i'a'hd theoutlet {portsa're connectedito the parts to be lubricated by a similar pipe connec- 'tion34,as indie teddn Figqt- The lubricarats delivered' to the**-in1et ports under pressure produced either mechanically "or hydrostaticallyl The a alve operates as follows': When the '5, the lubricantunder pressure will flow from the pipe line 83 through tl'i'e' inlet port 9, the valve port 7 and the ducts 21,-22 into the loiver 'end of'the cy-litide'rfthus forcing the-piston up as P'farasit -is 'setfor' to goi v Assumingthat there be "grease in theicylinde'r above the piston, "the grease "ivill' be 'forced tothe'part,or parts, to =be lubricated by passing'tlimuglrthe tense-8, 27 intothe J1 a 'r Iff '2 1:

heir the valve plug lis-tut'hetl about 90 degrees into the position sh'o'yvnin Fig-L 6,

into the inlet port 9 and through th'e ducts au'as eaeegeeate vaiveipoees we t e {The emu paes'surei or the incoming grease erly timing the frequency of operation of amou nt of g-rease may 0? be lubriesttedy "dur- On both sides of the yoke-bridge 17 are placed on the threaded stem 16 of the piston rod the adjusting nuts 35, the purpose of which is to vary the amount of lubricant delivered at each stroke of the piston by regulating the travel thereof.

VVhilethe illustrated example constitutes a practical embodiment of my invention, I do not Wish to limit myself strictly to the mechanical details herein illustrated, since -'the'same could be considerably *varied without tleparti-ng from the scope-of the invention as defined in the appended claims.

I claim: 7

1. In a" lubricating valve comprising a valve-body having alubricant container co- ;axiallydisposed therein,.two inlet connections disposed in angular relation to each other on saidbody and tWo similarly disposed utlet connections; a piston movable 'within the containerand valve-plug disposed at right angles to {thecontainfer and rotatable Within-the body; saidvalve -plug V having a'straight diametr'al inletp'ort and p a straight *di-ametr'a'l "outlet-port, "each port being *acrapted to register with either" one 016 its -corres ponding inlet and" outlet eon-nec- "t ioiis; saidvawe body having a set of ducts formed within; the valve-body for' =connecting the inlet-pert with the container at either side of th'e piston ahd a other-set'tf *ducts sini-ilarlyiormedand adapted to can- "nect the outletport Withtlie container at "either-side of thepistonm 1 2; In "a lubricating Valve comprising a valve-body "having co-axi'all-y dis-posed lubricant container' hollowecl outtherei1'1, -tvvo -in1et connections disposed in'angular relation to each othec'on said bedy axfd t o that larly disposed; outlet connections? a floating piston movable by said lubrieantiwithin the container; a valve-plug disposedatnight angles to the container androtatablewvithin -the body{said ValVe pIUg Having a straight Vdiametral inlet port and a straight 'dia-.'

-metral5;o'utlet port parallelto the inlet' port, x-each'iport'beingI adapted to register with either one of its correspondinglinlet and out- --le't connections; saifd valve, body haviiig a I set of ducts formedwithin the valve fbody= for connecting the inlet port with-thecontainer at either side the piston and an *other set of ducts *SilTllltI'lY fOr-mdand if adapted to connect the outlet ,port- \v'ifilr'the container at either side of the piston. In'fa lubrieatirig walv'e' "comprisin a "valve' body having a ce axiauy f'dis'posed' lubricaiit"cdntainerjhollowed outitheflrein t'wo "inlet c onneictio'nsydisposedfin 'ariglilar at right angles we the "'c'ontaineraiitl reming a straight diametral inlet port anda straight diametral outlet port parallel to the inlet port, each port being adapted to register with either one of its correspondin inlet and outletconnections; said valveody having a set of ducts formed within the valve-body for connecting the inlet port with the container at either side of the piston and another set of ducts similarly formed and adapted to connect the outlet port with the container at either side of the piston, and removable means providing outward access to said sets of ducts for the purpose of cleaning the same.

In testimony whereof I afiix my signature. SAMUEL S. ROBERTS, 

